am placing a 3 cylinder at least 20 HP motor. It will be horizontally mounted as low as possible with a CV system tying to the prop shaft.

Motor will be shifted forward 18 inches to better balance the load. I have very little gear / housing supplies aboard and she's always bow high. larger motor is a bit heavier and has lowered the stern resulting in drag as the reverse transom is slightly in the water, creating a swirl on the stern.

, and I WILL have access to the front behind the companionway ladder..

Batteries will be lowered as low as possible, and more available, not buried in the back closet.

Head will be a standing shower arrangement, and reconfigured layout.

cabin / house projects done, time to get sailing. Got the retirement summer home ready for retirement, now I need my sailing summer retirement boat done.

Kubota ? Yanmar ?

Both are based in the farm tractors / industrial power plants in the Japanese OEM's of Kubota and Yanmar.

Universal 5424 3 cylinder diesel for sale. was originally in S2 11.0 Center cockpit. Repowered my 9.2 meter center cockpit with it as a temporary repower. Moving forward with new repower now.

Well running, 5424 Universal diesel for sale or for parts.
Original in 36 foot S2 sailboat. Used last 5 years in 30' S2 Sailboat. Pushes boat at over 8 knots. no smoke , no oil, no white, good from cold start, no starting fluid, fires right up.
Fresh water use mostly, Cheasapeake Bay, and Great Lakes.

Closed loop cooling only.
Engine still in boat. I will remove
Great for cost effective repower.
I will crate, you pay for shipping pick up either from Northern Michigan or Cincinnati. Weight 385#s.
transmission available as well.

I have a Yanmar 3GM30F in the boat and a Kubota D950 in my Bobcat. Both are 3 cylinder engines. The Kubota is an absolutely awesome engine. It has survived hard use for many years. I doubt that the Yanmar is as anywhere near as tough. There just seem to be too many people with too many problems with Yanmars. In addition, they have no glow plugs for cold weather starting which is a royal PITA when the temp gets below 40 degrees. If I were repowering and there were a good marine conversion for a Kubota, I would definitely go that way. Kubota parts will also be MUCH easier to come by and probably a lot cheaper.

What you should take into consideration is the cost of replacement parts. Yanmar allows only limited access to dealerships based on your geographic location and costs are high.

You can get replacement parts for Kubota and Beta engines at Kubota tractor dealerships anywhere in the US & Canada (if you're here). A $42 "marine" Universal thermostat cost me $17 at a tractor dealer.

Who wouldn't choose THAT deal?

One other consideration: Yanmar has the mixing elbow built right into a major piece of the engine. In this and many other boating forums, I have read that they get coked up and either require frequent removal and cleaning or replacement. Kubota and Beta engines have their exhaust riser nipples off the engine, remote on a piece of pipe, and rarely get clogged. It's a maintenance issue.

Kubota - a tractor engine modified for a boat
Yanmar - a boat engine designed and made for a boat.

You know that Yanmar also makes tractors. I just drove a friends YM155d a few weeks ago. The engine block is 2 cylinders and appeared to be very similar to the block on my Yanmar 2GM20F, but I didn't have them side by side to compare.

I'm not sure if it matters if Yanmar does the marinization of their diesel engines or if Kubota sells raw engines and other companies marinize them. A good result can be had in both situations.

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